/*
 * atoi function
 *
 * This file is part of PanicOS.
 *
 * PanicOS is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PanicOS is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with PanicOS.  If not, see <https://www.gnu.org/licenses/>.
 */

int atoi(const char *nptr) {
	int n = 0, neg = 0;
	while (*nptr) {
		if ((*nptr >= '0') && (*nptr <= '9')) {
			n = n * 10 + (*nptr - '0');
		} else if (*nptr == '-') {
			neg = 1;
		} else if (*nptr == '+') {
			neg = 0;
		}
		nptr++;
	}
	return neg ? -n : n;
}
